bar and barcon shifter incompatibility....

thesuper said:

so the ID of my Nitto B601 bar is about 17mm

the OD of my NOS Campagnolo barcons is about 19mm

to get these to fit this bar....should i have metal removed from
the shifter or the inside of the bar?

From a safety point: the shifter, as there's plenty of metal with no
other reason but to fill the inside of the bar.

Thinning the bar makes it more prone to failure (actually some
lightweight bars explicitely deny barcons), though a failure there
probably wouldn't be fatal...

--
MfG/Best regards
helmut springer

Helmut Springer said:

thesuper said:

so the ID of my Nitto B601 bar is about 17mm

the OD of my NOS Campagnolo barcons is about 19mm

to get these to fit this bar....should i have metal removed from
the shifter or the inside of the bar?

From a safety point: the shifter, as there's plenty of metal with no
other reason but to fill the inside of the bar.

Thinning the bar makes it more prone to failure (actually some
lightweight bars explicitely deny barcons), though a failure there
probably wouldn't be fatal...

If there is enough meat turning down the wedge is probably easiest.
(Clamp in 19mm tube, turn down half, flip over bits and clamp in 17 mm
tube etc)

--
---
Marten Gerritsen

INFOapestaartjeM-GINEERINGpuntNL
www.m-gineering.nl

thanks, i'll see what options i have to remove some metal...

ohhh, i really think you should take 1mm off the barcons, 1mm of the
handlebars. And then, use the bars for 3 months and sell the parts
separately on Ebay! Yeah THAT'S the ticket !!

- Don "har" Gillies
San Diego, CA

(Donald Gillies) said:

ohhh, i really think you should take 1mm off the barcons, 1mm of the
handlebars. And then, use the bars for 3 months and sell the parts
separately on Ebay! Yeah THAT'S the ticket !!

Gee, how'd you know what sort of stuff I get when I buy on ebay.

My latest was a tubular wheelset that turned out to be clincher?!?!?!?!

Ron

To make barend shifters fit into tubes (handle bars) with inside diams
that are too small, I do this:

1. Grind down the the widest edge of the big fat bolt that runs
through the center of the expanding wedges. Grind the widest portion
of the wedge shaped end evenly all around

2. Remove retension ring that holds the expanding wedges onto the
exansion bolt. Take out one of the three wedges. Save the ring and
extra wedge and clearly label them so you know what they are five years
from now. Stuff the assembly as best s possible into the bars and see
if they know fit and still secure the assembly.

3. You mafe file the wedges down, if still too small.

4. Try just the "missing wedge" option, above first, grind the
expansion bot only if too big to fit, consider grinding down wedges
only as a last resort.

The above works well to get barends into the ends handle bars, time
trial / aero bars that would otherwise be too small to accept barends.

Have fun

Pat Smith

Husband, Dad, Soldier, Cyclist, Archer

thanks...great information.

RonSonic said:

Gee, how'd you know what sort of stuff I get when I buy on ebay.

My latest was a tubular wheelset that turned out to be clincher?!?!?!?!

So you got a better deal than you anticipated!

--
Dave, wearing his troll hat
dvt at psu dot edu